120143439 has 32 divisors (see below), whose sum is σ = 193636800. Its totient is φ = 73180800.

The previous prime is 120143417. The next prime is 120143453. The reversal of 120143439 is 934341021.

It is not a de Polignac number, because 120143439 - 2⁷ = 120143311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120143239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33757 + ... + 37145.

It is an arithmetic number, because the mean of its divisors is an integer number (6051150).

Almost surely, 2^120143439 is an apocalyptic number.

120143439 is a deficient number, since it is larger than the sum of its proper divisors (73493361).

120143439 is a wasteful number, since it uses less digits than its factorization.

120143439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 120143439 is about 10960.9962594647. The cubic root of 120143439 is about 493.4388649428.

The spelling of 120143439 in words is "one hundred twenty million, one hundred forty-three thousand, four hundred thirty-nine".